Table 3.

Adjusted R-square (in bold) and standardized regression coefficients (betas) for models predicting costs at 6, 12, and 24 months

	Follow up
	6 Months (N = 318)	12 Months (N = 315)	24 Months (N = 245)
Model 1 Adjusted R-square	0.010	0.001	0.004
Beta
Age	-0.067	-0.037	-0.030
Gender	.11	0.063	0.108
Model 2 Adjusted R-square	0.049**	0.066***	0.130***
Beta
Age	-0.063	-0.031	0.008
Gender	0.118*	0.076	0.115
Chronic Health Condition	0.180**	0.265***	0.360***
Model 3 Adjusted R-square	0.089***	0.103***	0.122***
Beta
Age	-0.103	-0.091	-0.079
Gender	0.080	0.030	0.076
PedsQL Physical Functioning	0.291***	0.353***	0.379***
PedsQL Psychosocial Functioning	0.004	0.057	0.081
Model 4 Adjusted R-square	0.101***	0.144***	0.212***
Beta
Age	0.098	-0.083	-0.043
Gender	0.086	0.040	0.080
Chronic Health Condition	0.126+	0.214***	0.312***
PedsQL Physical Functioning	0.275***	0.326***	0.340***
PedsQL Psychosocial Functioning	0.025	0.093	0.123+

⁺ = p < 0.05; * = p < 0.01; *** = p < 0.001; *** = p < 0.0001; R² = percent variance accounted for.